Routing method for monitoring bridge state based on wireless sensor network

Abstract

The invention discloses a routing method for monitoring the bridge state based on a wireless sensor network. The method comprises the following steps of: computing the number of clusters to be partitioned through the node position information of the wireless sensor network; introducing a cost function in combination with a clustering algorithm for clustering all nodes of the wireless sensor network; and communicating each cluster header with a converging node by adopting a shortest path in a multi-hop relay mode and performing multi-hop relay communication with a virtual cluster header method when the distance between a cluster header node and a base station surpasses the node communication distance, so that unreasonable situations such as a large quantity of cluster headers in an intensive node region and the no cluster header and distribution of cluster headers on network edges in a spare node region caused by the adoption of an ordinary state information detection routing method for monitoring the bridge state are avoided effectively. Due to the adoption of the method, the load of the wireless sensor network is more balanced, the transmission path is shortened, the transmission speed and transmission efficiency are increased, and the network energy consumption is lowered effectively; and the method is suitable for monitoring the state of a large-span bridge.

Description

technical field [0001] The present invention relates to a wireless sensor network (WSN, Wireless Sensor Network) routing method, in particular to a wireless sensor network-based bridge state monitoring routing method. Background technique [0002] The bridge status monitoring system based on the wireless sensor network is to send the sensor data of different monitoring parts to the sink node of the wireless sensor network according to the routing method of the wireless sensor network. For long-span bridges, a large number of monitoring sensors need to be arranged, and data needs to be transmitted between nodes in a relay and multi-hop manner. Therefore, the optimization of routing paths between nodes is an important guarantee for reliable data transmission. In a wireless sensor network using a cluster structure, network nodes are usually divided into several clusters. Each cluster usually consists of a cluster head node (CH, Cluster Header) and multiple cluster member node...

AI Technical Summary

Problems solved by technology

Since the design of the wireless sensor network routing protocol is driven by the application, and because the structure of the bridge itself is different from the general detection object, its space span is large, and the commonly used routing methods are prone to dense node density when used for bridge status monitoring. There are many cluster heads in places, there are no cluster heads in places where nodes are sparse, and cluster heads are distributed at the edge of wireless sensor networks. Therefore, traditional wireless sensor network routing methods cannot effectively monitor bridge status. Therefore, it is urgent Need a routing method with shorter transmission path, faster transmission speed, load balance and lower node energy consumption

Images